Soil, abode, animal, backdrop, background, biology, concepts, conceptual, cone, conservation, crawdad, crawfish, crayfish, day, den, dirt, dwelling, earth, environment, environmental, ground, hideout, hole, hovel, home, horizontal, inhabited, lair, landscape, life, mud, natural, nature, nest, nook, outdoors, outside, protection, refuge, resting, retreat, safe, science, shelter, terrain, tunnel, wilderness, wildlife, zoology, outdoor, habitat, soil, direction, life science, achiever, habitation, spiny lobster, skill, discipline, twenty-four hours, shellfish, housing, vicinity, improvement, hiding place, safety, transformation, scenery, dirtiness, opening, food, hut, stage set, corner, disfavor, rejection, box, strongbox, land, conception, seafood, departure, person, burrow, withdrawal, situation, fauna
Crawfish den surrounded by a cone of mud